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/*
* Copyright (C) 2023 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_COMPILER_OPTIMIZING_FAST_COMPILER_H_
#define ART_COMPILER_OPTIMIZING_FAST_COMPILER_H_
#include <memory>
#include <vector>
#include "arch/instruction_set.h"
#include "base/array_ref.h"
#include "base/macros.h"
#include "base/scoped_arena_containers.h"
#include "driver/compiler_options.h"
#include "handle_scope.h"
namespace art HIDDEN {
class ArenaAllocator;
class ArtMethod;
class DexCompilationUnit;
class VariableSizedHandleScope;
namespace mirror {
class Object;
}
/**
* A lightweight, one-pass compiler. Goes over each dex instruction and emits
* native code for it.
*/
class FastCompiler {
public:
static std::unique_ptr<FastCompiler> Compile(
ArtMethod* method,
[[maybe_unused]] ArenaAllocator* allocator,
[[maybe_unused]] ArenaStack* arena_stack,
[[maybe_unused]] VariableSizedHandleScope* handles,
[[maybe_unused]] const CompilerOptions& compiler_options,
[[maybe_unused]] const DexCompilationUnit& dex_compilation_unit) {
if (method == nullptr) {
return nullptr;
}
switch (compiler_options.GetInstructionSet()) {
#ifdef ART_ENABLE_CODEGEN_arm64
case InstructionSet::kArm64:
return CompileARM64(method,
allocator,
arena_stack,
handles,
compiler_options,
dex_compilation_unit);
#endif
default:
return nullptr;
}
}
virtual ArrayRef<const uint8_t> GetCode() const = 0;
virtual ScopedArenaVector<uint8_t> BuildStackMaps() const = 0;
virtual ArrayRef<const uint8_t> GetCfiData() const = 0;
virtual int32_t GetFrameSize() const = 0;
virtual uint32_t GetNumberOfJitRoots() const = 0;
virtual void EmitJitRoots(uint8_t* code,
const uint8_t* roots_data,
/*out*/std::vector<Handle<mirror::Object>>* roots)
REQUIRES_SHARED(Locks::mutator_lock_) = 0;
virtual ~FastCompiler() = default;
private:
#ifdef ART_ENABLE_CODEGEN_arm64
static std::unique_ptr<FastCompiler> CompileARM64(ArtMethod* method,
ArenaAllocator* allocator,
ArenaStack* arena_stack,
VariableSizedHandleScope* handles,
const CompilerOptions& compiler_options,
const DexCompilationUnit& dex_compilation_unit);
#endif
};
} // namespace art
#endif // ART_COMPILER_OPTIMIZING_FAST_COMPILER_H_
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